Lecture on Animal Tissues

Introduction

• Topic of the third lecture: Animal Tissues
• The first and second lectures covered cells and plant tissues respectively
• Student issues: Difficulty in terms being explained in Hindi

Study of Tissues

• Study of tissues: Histology

Types of Animal Tissues

1. Epithelial Tissue (Upkala Utak)

   • Types: Squamous, Cuboidal, Columnar
   • Main function: Covering and Protection
   • Squamous Epithelium: Simple (Single Layer), Stratified (Multi-layer)
   • Location: Inner lining of the mouth, esophagus

2. Nervous Tissue (Tanthrika Utak)

   • Function: Transmission of sense signals

3. Muscular Tissue (Peshi Utak)

   • Types: Skeletal, Smooth, Cardiac
   • Function: Movement, Contraction, and Relaxation
   • Location: Heart, intestines, etc.

4. Connective Tissue (Sanyoji Utak)

   • Types: Loose, Dense, Adipose, Bone, Cartilage, Fluid
   • Function: Support, Connection
   • Special Types: Tendons (connect muscle to bone), Ligaments (connect bone to bone)

Subtypes of Epithelial Tissue

• Squamous Epithelium: Covering, Protective
• Cuboidal Epithelium: Absorption, Secretion
• Columnar Epithelium: Some are ciliated

Nervous Tissue

• Neuron
• Function: Transmission of electrical impulses

Muscular Tissue

• Skeletal Muscle: Voluntary
• Smooth Muscle: Involuntary
• Cardiac Muscle: Involuntary, in the heart

Connective Tissue

1. Loose Connective: Space filling
2. Dense Connective: Tendons, Ligaments
3. Adipose: Fat, Temperature insulation
4. Bone: Hard, Calcium Phosphorus matrix
5. Cartilage: Soft bone
6. Fluid Connective: Blood, Lymph

Fluid Connective Tissue

• Blood: Platelets (help in clotting), Plasma
• Lymph: Colorless, Defense system

Questions

• Homework: Which tissues are affected when the skin is damaged?

Conclusion

• Next Lecture: Plant Kingdom
• Doubts or suggestions: Comment section

Thank you!